package com.nowcoder.community.util;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.Arrays;

public class CookieUtil {
    public static String getValue(HttpServletRequest request,String name){
        if (request==null||name==null) {
            throw new IllegalArgumentException("参数为空!");
        }
        Cookie[] cookies=request.getCookies();
        if (cookies != null) {
            for (Cookie cookie : cookies)
                if (cookie.getName().equals(name))
                    return cookie.getValue();
        }
        return null;
    }
}
